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Power Electronics

Power Electronics
Power transistor are type of

 BJTs.
 MOSFETs.
 IGBTs.
  All of above.

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Power Electronics
ON state voltage drop across SCR lie between the range

  1 - 1.5 V.
 1.5 - 2 V.
 0 - 0.5 V.
 0.5 - 1 V.

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Power Electronics
If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR?

 3.1 µs
  3.3 µs
 3.2 µs
 3 µs.

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Power Electronics
By which one of the following we can measure the reliability of a string?

 String efficient.
 Reliability factor.
  Derating factor.
 Factor of safety.

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Power Electronics
Maximum power loss occurs during

 all.
  rise time.
 spread time.
 delay time.

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Power Electronics
The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is

 130 μs.
  135 μs.
 145 μs.
 140 μs.

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